Brand and high qualityEasy for installationExcellent CO2 dissolve rateProvide elegant look for your fish tankSuitable pipes with an inner diameter of 4mmType: Carbon Dioxide RefinerLength: 60mmRefine Diameter: 24mmNotes:The self-made CO2 pressure can reach 1.2 kg to release gas, and the normal self-made pressure is around 1.5.If you 't know homemade pressure, ask the seller who bought homemade CO2 products!Since the effect of thinning tablets is better after soaking, please be to soak for 48 hours before using!Colour:BlueMaterial:aluminum alloyPackage Contents:1 x Aquarium Atomizer Diffuser1 x SuckerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.